What does "blocks" mean in English for Spanish?

In English for Spanish, "blocks" means:

cuadras

Listen to "blocks": (If you have an HTML5 enabled browser, you can listen to the native audio below)

This is a word that is used in the GamesForLanguage English for Spanish Language Game in the following scenes:

• English for Spanish 4, Level 2, Scene 2
• English for Spanish 4, Level 2, Scene 3
• English for Spanish 4, Level 2, Scene 4